Fig. 2. (a) Time-resolved PL lifetime of the CsPbBr3/CdS core/shell nanostructure showing enhanced lifetime comparison to the pristine. (b) Schematic of the presentation of carrier recombination of the carrier transfer process of pristine CsPbBr3 and CsPbBr3/CdS core/shell nanostructures. Reproduced from ref. 24 under the terms of the CC-BY license. (c) PL lifetime of CsPbBr3/ZnS showing 15 times enhancement in comparison to the control (CsPbBr3-oleylammonium bromide capped). (d) Schematic of the CsPbBr3/ZnS core/shell band structure showing typical charge separation in the semiconductor heterojunction. (e) HR-TEM image of the typical heterojunction of the CsPbBr3–ZnS core/shell heterojunction. Reproduced from ref. 23 with permission, Copyright © 2020, American Chemical Society.
